To Distinguish Real Metal Voice From Mineral Voice

[Ramis bozo]

Hello there

For example I am using a pi detector and I heard a sound I thought deeply, how can I decide whether it is real or sound or mineral? thank you

[Chris Ben]

There are some people way more qualified to answer than I, but my steps are a follows.

1 I try to see if the signal is repeatable. 

2 I look to see how large of an area I'm getting a reaction from my detector. Is it pin printable? Or a large area.

3 next I start to scrape off layers of ground. Does the signal change? Lighter or stronger? This may take a few attempt to find a difference. 

4 If it gets stronger I dig.

Now with all this being said, I have been fooled on a few occasions. Once specifically by some red clay. The signal got louder on the first few digs, then never changed even after more than a foot and half of digging.

My 1.4 ounce nugget I initially thought was ground noise. It wasn't till after a few scrapes and dig I realized it was a target (which I thought was trash lol)

So I guess I rather be safe than sorry.

Good luck! 

Chris

[IDdesertman]

Chris Ben provided some good info. One other thing that can to help determine if you've got ground noise or an actual target is to scrape a couple inches from over the target, and then scan your coil at the same level (a couple inches above the ground and not down in the hole) and see if the signal gets softer. Ground noises will often go away completely once the coil is a few inches off the soil. Might help you prevent yourself digging endlessly for a target that doesn't exist.

[phoenix]

Another thing that sometimes helps is re balance your detector on the dirt that came out of the hole.   Sometimes when you do that the signal in the hole will completely disappear. Dave

[Reg Wilson]

When using an auto ground tracking detector such as the GPX or GPZ  just sweeping back and forth continually in auto over the target noise will cause the suspected target signal to deteriorate noticeably if it is only a ground noise. The GPZ requires quite a few more sweeps than the GPX. It seems the GPZ is slower to ground balance, but the effect is still the same. Some people maintain that this action will actually tune out gold, but I have not found this to be so, but 'when in doubt, dig it out'.

 A most useful feature of the QED PI detector is that it has a numerical ground balance readout. When a suspect sound is heard, one simply checks and adjusts the ground balance in the vicinity, and then takes note of the GB reading .

Example.    GB reading 125   take GB up to 130 and note any difference in target response. Now lower GB to 120 and again note target response. If there is a noticeable difference in the readings, walk away. If there appears to be no noticeable difference you will most likely have a real target under your coil and not just a ground noise. I have put this to the test numerous times, and so far it has always been right.

Other manufacturers should consider this feature, as it is a great time saver.

[Northeast]

6 hours ago, Reg Wilson said:

 A most useful feature of the QED PI detector is that it has a numerical ground balance readout. When a suspect sound is heard, one simply checks and adjusts the ground balance in the vicinity, and then takes note of the GB reading .

Very interesting feature Reg.  Patented? 

[Reg Wilson]

Northeast, sorry but that I do not know.

[Ramis bozo]

thank you everyone